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4 PERIPHERAL CIRCUITS
S1C33210 PRODUCT PART EPSON A-61
NameAddressRegister name Bit Function Setting Init. R/W Remarks
–
RCODE7
RCODE6
RCODE5
RCODE4
RCODE3
RCODE2
RCODE1
RCODE0
D15–8
D7
D6
D5
D4
D3
D2
D1
D0
–
Residue Code
Number of valid bits in excess
residue code bits at end of frame
–
11111110
11111100
11111000
11110000
11100000
11000000
10000000
RCODE[7:0] Effective bits
7
6
5
4
3
2
1
–
X
X
X
X
X
X
X
X
–
R
0 when being read.
Only valid when
RESID = 1
0200332
(HW)
HDLC residue
code register
–
TXUE
TXBRDY
–
TXUDR
D15–8
D7
D6
D5–1
D0
–
Tx underrun/EOM detected
Transmit queue not full
–
Transmit queue underrun
–
–
–
X
X
–
X
–
R
R
–
R
0 when being read.
0 when being read.
0200334
(HW)
HDLC transmit
status register
1 not Full 0 Full
1 Yes 0 No
1 Under run 0
No underrun
–
ESINT
SPINT
RXINT
TXINT
–
D15–8
D7
D6
D5
D4
D3–0
–
E/S INT interrupt
Sp INT interrupt
Rx INT interrupt
Tx INT interrupt
–
–
–
–
X
X
X
X
–
–
R
R
R
R
–
0 when being read.
0 when being read.
0200336
(HW)
1
Request pending
0
No interrupts
1
Request pending
0
No interrupts
1
Request pending
0
No interrupts
1
Request pending
0
No interrupts
HDLC monitor
register